Before someone loses a screw, I DID RUN A SEARCH!
I've got a strange problem. Just swapped barrels on an A-3 flattop. Took it to the range and had to really crank windage right to get zero at 50 yards. This weapon has a Pic rail non-flip down (fixed) rear sight. It zeroed fine before the barrel swap. No, I didn't remove the FSB and that is the only thing I can remember about windage problems during a barrel swap.
I'm thinking I just needed to reset the Pic. base on the rear sight as I could have gotten it canted one way or another.
Anyone else run into this?
tolerances are going to be different
rear sight placement will be slightly off
torque specs will be different which will effect poi
also the barrel will also shoot different due to manu. tolerances